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HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROL SYSTEM (5.6L) (3 OF 3))BASIC INSPECTIONHOW TO SET SRT CODEWORK PROCEDURE
2019 Infiniti Q70 3.7 Luxe, AWD

Work Procedure

2019 Infiniti Q70 3.7 Luxe, AWDSECTION Work Procedure
WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC 

    Check DTC.

    Is any DTC detected?

    YES

    Repair malfunction(s) and erase DTC. Refer to DTC Index .

    NO

    GO TO 2.

  2. CHECK SRT STATUS 

    SYMBOL WITH CONSULT

    Select "SRT STATUS" in "DTC & SRT CONFIRMATION" mode with CONSULT.

    SYMBOL WITHOUT CONSULT

    Perform "SRT status" mode with On Board Diagnosis Function .

    SYMBOL WITH GST

    Select Service $01 with GST.

    Is SRT code(s) set?

    YES

    GO TO 11.

    NO

    With CONSULT: GO TO 3 .

    NO

    Without CONSULT: GO TO 4 .

  3. DTC CONFIRMATION PROCEDURE 
    1. Select "SRT WORK SUPPORT" in "DTC & SRT CONFIRMATION" mode with CONSULT.
    2. For SRT(s) that is not set, perform the corresponding "DTC CONFIRMATION PROCEDURE" according to the "Performance Priority" in the "SRT ITEM" table. Refer to Description .
    3. Check DTC.

    Is any DTC detected?

    YES

    Repair malfunction(s) and erase DTC. Refer to DTC Index .

    NO

    GO TO 10.

  4. PERFORM ROAD TEST 
    • Check the "Performance Priority" in the "SRT ITEM" table. Refer to Description .
    • Perform the most efficient SRT set driving pattern to set the SRT properly. Refer to SRT Set Driving Pattern .

      In order to set all SRTs, the SRT set driving pattern must be performed at least once.

    GO TO 5.

  5. PATTERN 1 
    1. Check the vehicle condition;
      • Engine coolant temperature is -10 to 35 deg.C (14 to 95 deg.F).
      • Fuel tank temperature is more than 0 deg.C (32 deg.F).
    2. Start the engine.
    3. Keep engine idling until the engine coolant temperature is greater than 70 deg.C (158 deg.F)
    NOTE: ECM terminal voltage is follows;
    • Engine coolant temperature
      • -10 to 35 deg.C (14 to 95 deg.F): 3.0 - 4.3 V
      • 70 deg.(158 deg.F): Less than 1.4 V
    • Fuel tank temperature: Less than 4.1 V

    Refer to Reference Value .

    GO TO 6.

  6. PATTERN 2 
    1. Drive the vehicle. And depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal and keep it released for more than 10 seconds.
    2. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again
    NOTE:
    • Checking the vehicle speed with GST is advised.
    • When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted. In this case, the time required for diagnosis may be extended.

    GO TO 7.

  7. PATTERN 3 
    • Operate vehicle following the driving pattern shown in the figure.
      G04073676Courtesy of NISSAN NORTH AMERICA, INC.
    • Release the accelerator pedal during deceleration of vehicle speed from 90 km/h (56 MPH) to 0 km/h (0 MPH).

    GO TO 8.

  8. PATTERN 4 
    • The accelerator pedal must be held very steady during steady-state driving.
    • If the accelerator pedal is moved, the test must be conducted again.

    GO TO 9.

  9. PATTERN 5 
    • Cool down the engine so that the engine coolant temperature lowers between 15 - 35 deg.C (59 - 95 deg.F).
      CAUTION: Never turn the ignition switch ON while cooling down the engine.
    • Engine coolant temperature at engine start is between 15 - 35 deg.C (59 - 95 deg.F) and has lowered 45 deg.C (113 deg.F) or more since the latest engine stop.

    GO TO 10.

  10. CHECK SRT STATUS 

    SYMBOL WITH CONSULT

    Select "SRT STATUS" in "DTC & SRT CONFIRMATION" mode with CONSULT.

    SYMBOL WITHOUT CONSULT

    Perform "SRT status" mode with On Board Diagnosis Function .

    SYMBOL WITH GST

    Select Service $01 with GST.

    Is SRT(s) set?

    YES

    END

    NO

    Call TECH LINE or take appropriate action.

  11. CHECK PERMANENT DTC 
    NOTE: Permanent DTC cannot be checked with a tool other than CONSULT or GST.

    SYMBOL With CONSULT

    Select "SRT STATUS" in "DTC & SRT CONFIRMATION" mode with CONSULT.

    SYMBOL With GST

    Select Service $0A with GST.

    Is permanent DTC(s) detected?

    YES

    Go to Description .

    NO

    END

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.